header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  margin: 0 auto;
  z-index: 10000;
  height: 80px;
  line-height: 80px;
  color: #666666;
  overflow: hidden;
  background-color: #FFF; }
  header .identity {
    float: left;
    width: 140px;
    display: flex;
    justify-content: space-between;
    height: 80px; }
    header .identity .logo {
      color: #2ECE9A;
      font-size: 14px;
      line-height: 80px; }
    header .identity .title {
      font-size: 16px;
      font-weight: bold;
      line-height: 80px; }
  header .nav {
    height: 80px;
    font-size: 20px;
    float: left; }
    header .nav a {
      height: 60px;
      display: inline-block;
      color: #666666;
      margin-left: 60px;
      border-bottom: 2px solid #ffffff;
      text-decoration: none; }
      header .nav a:hover, header .nav a.active {
        color: #2ECE9A;
        border-bottom: 2px solid #2ECE9A; }
  header .opera {
    font-size: 14px;
    float: right;
    display: flex;
    justify-content: space-between; }
    header .opera a {
      color: #666666; }
      header .opera a:hover, header .opera a.active {
        color: #2ECE9A; }
    header .opera p {
      margin: 0 10px; }

.sidebar {
  padding: 20px 15px;
  background-color: #FFF;
  position: fixed;
  top: 470px;
  height: 170px; }
  .sidebar .kf, .sidebar .top {
    cursor: pointer;
    display: block;
    color: #999999;
    font-size: 16px; }
    .sidebar .kf .img, .sidebar .top .img {
      width: 25px;
      height: 25px; }
    .sidebar .kf.active, .sidebar .top.active {
      color: #2ECE9A; }
  .sidebar .top {
    margin-top: 30px; }
